1. OEM (English: Original Equipment Manufacturer, OEM) abbreviation: commissioned manufacturing, also translated as original equipment manufacturer, refers to the equipment and technology provided by the purchaser, and the manufacturer is responsible for production, A modern and popular production method in which manpower and space are provided, and the purchaser is responsible for sales.

2. ODM (English: the abbreviation of Original Design Manufacturer), that is, the original factory entrusts the design to the OEM, also translated as the original design manufacturer, which means that the purchaser entrusts the manufacturer, and the manufacturer starts from the design. A production method in which the production is handled by one source, and the final product is affixed with the buyer's trademark and the buyer is responsible for sales.

3. Original Brand Manufacturer (English: Original Brand Manufacturer, abbreviated as OBM), also translated as original brand design, refers to the process where the manufacturer establishes its own brand and markets it in the market. kind of practice. Design, procurement, production and sales are all completed independently by a single company, or management is outsourced.

Extended information:

OEM key is a model for software companies to sell authorization. Its biggest feature is that it is usually directly attached to important hardware such as motherboards or hard drives. Microsoft is a well-known example of this, providing OEM versions of software for their Windows operating system.

OEM product keys are cheaper than their retail counterparts, but use the same software. OEM keys are mainly provided to direct OEM manufacturers and system developers, so they are generally sold to such manufacturers (such as HP, Dell, Toshiba, Lenovo, etc.) as volume license key orders. Individuals can also purchase them for personal use (including virtual hardware), or for sale or resale of computers they have built.

In every Microsoft OEM-related end-user license agreement, the product key is bound to the computer motherboard on which it was originally installed. Afterwards, this key generally cannot be transferred between computers. Transferred. This is in contrast to retail keys, which are transferable and can only be activated once for a single computer. A major hardware change will trigger a reactivation reminder, just like the retail version.

The direct OEM takes formal responsibility for things like mounting media, although it is not required to provide this service when selling computer hardware, and in practice may not do so to reduce costs. On the contrary, the services provided by manufacturers are more about restoring partitions on primary storage devices for users to repair or restore their systems to factory status.

System manufacturers have different requirements for installation media from direct OEM manufacturers. In Windows versions that require a valid product key for download media from Microsoft officials (such as Windows 7), OEM keys will be refused use, and the parties will need to obtain technical support from the manufacturer about activating the system.